日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

 
 
 

當(dāng)前位置: Language Tips> 新聞播報(bào)

Beijing-area air better than before

中國(guó)日?qǐng)?bào)網(wǎng) 2014-03-03 14:04

 

Get Flash Player

Download

The pollution that hit Hebei province, Beijing and Tianjin in the past week was less severe than last year, monitoring results revealed.

From Feb 20 to 26, Beijing, Tianjin and Hebei were shrouded in smog.

However, environment-monitoring results from the Chinese Academy of Sciences showed that the average concentration of PM2.5 - fine particulate matter with a diameter less than 2.5 microns that can lodge in the lungs - was 11 percent less than it was when smog hit the region in spring 2013, and the peak concentration decreased by 16.4 percent.

"The concentration of pollutants in the smog decreased by 20 to 30 percent in general over the last year," said Wang Yuesi, a researcher from the Institute of Atmospheric Physics under the Chinese Academy of Sciences.

Wang was speaking on Saturday at a forum in Beijing held by the Chinese Academy of Sciences to discuss the cause of the smog.

The institute monitored the concentration of PM2.5 and other pollutants across the country, with 23 monitoring stations in North China. The comparison was based on data collected in January and February this year and January 2013, when severe pollution lasted nearly a month in North China.

Both of these smog events had similar climate conditions, Wang said.

"The monitoring results show that the emergency measures taken to cope with air pollution were effective. But the effect may not be so obvious to the general public because the PM2.5 concentration still caused a deterioration in visibility," he said.

Visibility in the smog was 2 kilometers, while Wang said the visibility will not be improved unless the PM2.5 concentration falls to below 100 micrograms per cubic meter. In February, it was 230 mg per cubic meter.

Beijing's contingency plan includes forcing nearby plants to cut production.

However, Wang said that only long-term solutions will end the pollution.

"The major PM2.5 source comes from coal power stations," he said. "The overall area of Beijing, Tianjin and Hebei accounts for some 0.05 percent of the world, while this region consumes 11 percent of its coal, so you don't have to use your imagination to understand why we are suffering from air pollution. We are living inside a huge chimney."

He Hong, from the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, said: "Our research shows that 'second particles' contribute around 60 percent to the formation of PM2.5 in Beijing and Tianjin."

Second particles are pollutants generated by chemical reactions between different pollutants released into the atmosphere.

"As a result, reducing the emissions of oxynitride and oxysulfide from coal fuel and vehicles is necessary," He said.

However, due to the complex chemical reactions, scientists are not sure about the exact contributing factors of smog. To understand better, the Chinese Academy of Sciences will apply for construction in 2016 of a "smog chamber" to simulate pollution conditions.

Questions:

1. What does smog monitors in North China say about this year’s pollution?

2. Who is in charge of the monitoring?

3. What is the visibility rate in the smog?

Answers:

1. Average concentration of PM2.5 was 11 percent less than it was when smog hit the region in spring 2013.

2. The Chinese Academy of Sciences.

3. 2 kilometers.

(中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津 Helen 編輯)

Beijing-area air better than before

About the broadcaster:

Beijing-area air better than before

Nelly Min is an editor at China Daily with more than 10 years of experience as a newspaper editor and photographer. She has worked at major newspapers in the U.S., including the Los Angeles Times and the Detroit Free Press. She is also fluent in Korean.

 
中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津版權(quán)說(shuō)明:凡注明來(lái)源為“中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國(guó)日?qǐng)?bào)網(wǎng)簽署英語(yǔ)點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請(qǐng)與010-84883561聯(lián)系;凡本網(wǎng)注明“來(lái)源:XXX(非英語(yǔ)點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請(qǐng)與稿件來(lái)源方聯(lián)系,如產(chǎn)生任何問(wèn)題與本網(wǎng)無(wú)關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請(qǐng)?zhí)峁┌鏅?quán)證明,以便盡快刪除。

中國(guó)日?qǐng)?bào)網(wǎng)雙語(yǔ)新聞

掃描左側(cè)二維碼

添加Chinadaily_Mobile
你想看的我們這兒都有!

中國(guó)日?qǐng)?bào)雙語(yǔ)手機(jī)報(bào)

點(diǎn)擊左側(cè)圖標(biāo)查看訂閱方式

中國(guó)首份雙語(yǔ)手機(jī)報(bào)
學(xué)英語(yǔ)看資訊一個(gè)都不能少!

關(guān)注和訂閱

本文相關(guān)閱讀
人氣排行
搜熱詞
 
 
精華欄目
 

閱讀

詞匯

視聽(tīng)

翻譯

口語(yǔ)

合作

 

關(guān)于我們 | 聯(lián)系方式 | 招聘信息

Copyright by chinadaily.com.cn. All rights reserved. None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited. 版權(quán)聲明:本網(wǎng)站所刊登的中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津內(nèi)容,版權(quán)屬中國(guó)日?qǐng)?bào)網(wǎng)所有,未經(jīng)協(xié)議授權(quán),禁止下載使用。 歡迎愿意與本網(wǎng)站合作的單位或個(gè)人與我們聯(lián)系。

電話:8610-84883645

傳真:8610-84883500

Email: [email protected]

主站蜘蛛池模板: 欧美狠狠操| 六月激情| 色综合天天综合网看在线影院 | 欧美日韩一区二区三区在线观看 | 色午夜日本 | 日韩欧美精品在线 | 蝌蚪久久窝 | 蜜桃av一区二区三区 | 爱高潮www亚洲精品 亚洲精品免费网站 | 天天干狠狠干 | 亚洲精品国产精品国自产在线 | 国产91亚洲精品 | 日本精品久久久久中文字幕 | 日韩精品极品视频在线观看免费 | 欧美一区二区三区大片 | 精品毛片在线观看 | 欧美一区二区在线观看 | 一本一道久久a久久精品蜜桃 | 欧美图片激情小说 | 一区二区三区高清在线观看 | 亚洲综合精品香蕉久久网97 | 久久久久久影院 | 国产精品色| 久久久久久亚洲精品 | 欧美黑人ⅹxxx片 | 超级碰碰碰频视频免费观看 | 无限看片在线版免费视频大全 | 欧美一区在线观看视频 | 日一日干一干 | 国产高清在线精品一区αpp | 综合久久av | 美女视频黄a视频免费全过程 | 婷婷天天 | 欧美va在线视频 | 浮力影院欧美 | 欧美精品久久久久久久久老牛影院 | 可以免费观看的av | theporn国产在线精品 | 成人97在线观看免费高清 | 8mav福利视频在线播放 | 看毛片网站 |